NorComp 172-025-181-021 D-Sub Plug 25 Position Connector – Equivalent & Substitute Parts

Part Overview

The NorComp 172-025-181-021 is a 25 position D-Sub plug connector with male pins, designed for panel mount through-hole solder termination applications. This connector features a steel shell with yellow chromate plating, gold-flashed contacts, and operates across a temperature range of -50°C to 100°C with a 5A current rating. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

172-025-181-021

NorComp Inc.In Stock: 1106172-025-181-021 Datasheet

Current PartRFQ

172-025-183L021

NorComp Inc.In Stock: 1084172-025-183L021 Datasheet

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09653616711

HARTINGIn Stock: 102909653616711 Datasheet

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09653616712

HARTINGIn Stock: 103509653616712 Datasheet

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09653617711

HARTINGIn Stock: 107209653617711 Datasheet

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09663216701

HARTINGIn Stock: 99209663216701 Datasheet

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09663216702

HARTINGIn Stock: 88909663216702 Datasheet

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09663217701

HARTINGIn Stock: 84009663217701 Datasheet

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09663217702

HARTINGIn Stock: 122509663217702 Datasheet

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SDBB-25P(55)

Hirose Electric Co LtdIn Stock: 1012SDBB-25P(55) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NorComp 172-025-181-021 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Connector style: D-Sub
• Connector type: Plug, Male Pins
• Number of positions: 25
• Number of rows: 2
• Shell size and layout: 3 (DB, B)
• Mounting type: Panel Mount, Through Hole
• Termination method: Solder
• Dielectric material: Polybutylene Terephthalate (PBT)
• Material flammability rating: UL94 V-0

Allowable Variations:

• Shell material finish: Yellow chromate plating may be substituted with nickel plating or steel without finish specification
• Contact finish: Gold flash is acceptable; variations in contact finish thickness are permitted
• Current rating: Substitutes with equal or higher current ratings (5A or greater) are acceptable
• Operating temperature: Substitutes with equal or extended temperature ranges are acceptable
• Flange feature: Board side (4-40) may be substituted with housing/shell (M3) or housing/shell (4-40) configurations
• Contact form: Stamped or machined contacts are acceptable alternatives
• Packaging: Tray or bulk packaging are interchangeable for component selection purposes

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute – NorComp 172-025-183L021

The NorComp 172-025-183L021 is the direct equivalent from the same manufacturer. It maintains identical electrical and mechanical specifications with the exception of shell finish (nickel plated versus yellow chromate plated) and extended operating temperature range (-50°C to 125°C versus -50°C to 100°C). This part is active in production and ROHS3 compliant, making it the preferred choice for new designs and legacy system replacements where RoHS compliance is required.

Secondary Substitutes – HARTING Series (09653616711, 09653616712, 09653617711, 09663216701, 09663216702, 09663217701, 09663217702)

All HARTING D-Sub plug connectors listed meet the core electrical and mechanical requirements. These parts are active in production and ROHS3 compliant. Current ratings range from 6.5A to 7.5A, exceeding the 5A requirement of the main part. Operating temperature ranges extend to -55°C to 125°C, providing broader environmental coverage. Mounting configurations vary between through-hole only and panel mount options; verify flange feature compatibility (M3 versus 4-40) with your PCB design before selection.

Alternative Substitute – Hirose SDBB-25P(55)

The Hirose SDBB-25P(55) provides panel mount through-hole configuration with panel mount capability matching the original part. This connector is active in production and RoHS compliant. However, the current rating is 3A, which is below the 5A specification of the main part. This substitute is suitable only for applications where current requirements do not exceed 3A. Operating temperature specification is not provided in the available data.

Compliance Considerations

The original NorComp 172-025-181-021 is RoHS non-compliant. All substitute parts listed are RoHS compliant (ROHS3 or RoHS), meeting current regulatory requirements for new designs and manufacturing. All parts carry UL94 V-0 flammability certification and are classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can I use a HARTING connector as a direct replacement for the NorComp 172-025-181-021?

A: Yes, HARTING D-Sub plug connectors 09653616711, 09653616712, 09653617711, 09663216701, 09663216702, 09663217701, and 09663217702 are electrically and mechanically compatible. All maintain 25 position, 2-row configuration with DB/B shell size, solder termination, and UL94 V-0 rating. Verify that the flange feature (M3 or 4-40) matches your PCB mounting holes before implementation.

Q: What is the difference between the NorComp 172-025-183L021 and the original 172-025-181-021?

A: The primary differences are shell finish (nickel plated versus yellow chromate plated), extended operating temperature range (-50°C to 125°C versus -50°C to 100°C), and RoHS compliance status (ROHS3 compliant versus non-compliant). All other electrical and mechanical parameters are identical. The 172-025-183L021 is the recommended direct replacement.

Q: Why is the Hirose SDBB-25P(55) listed as a substitute if its current rating is only 3A?

A: The Hirose connector meets all core mechanical and electrical interface requirements for 25 position D-Sub plug configuration. However, its 3A current rating is below the 5A specification of the main part. This substitute is applicable only to applications where actual current draw does not exceed 3A. For applications requiring the full 5A rating, select HARTING or NorComp alternatives.

Q: Are there packaging differences between substitute parts?

A: Yes. The NorComp 172-025-183L021 is supplied in tray packaging. HARTING parts 09653616711, 09653617711, 09663216701, 09663217701 are supplied in bulk packaging, while 09653616712, 09663216702, and 09663217702 are supplied in tray packaging. Hirose SDBB-25P(55) is supplied in tray packaging. Packaging does not affect component functionality and is selected based on procurement and inventory requirements.

Q: Do all substitute parts support panel mount installation?

A: No. The NorComp 172-025-183L021 and Hirose SDBB-25P(55) support panel mount through-hole installation. HARTING connectors are specified as through-hole only without explicit panel mount designation. Verify mounting compatibility with your mechanical design requirements before selection.

Q: What is the significance of the flange feature differences (Board Side 4-40 versus Housing/Shell M3)?

A: The flange feature determines the mounting hole pattern and fastener type on your PCB. Board side (4-40) uses 4-40 threaded holes, while housing/shell (M3) uses M3 metric threaded holes. These are not interchangeable. Select the substitute part whose flange feature matches your existing PCB design to avoid mechanical redesign.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are RoHS compliant (ROHS3 or RoHS). The original NorComp 172-025-181-021 is RoHS non-compliant. If your application requires RoHS compliance, any of the listed substitutes are acceptable from a regulatory standpoint.